Believe me, nurse, the difficulty of beginning will be nothing to the difficulty of knowing how to stop. At least that's the way it is with me when I… - Agatha Christie

"Mr. Satterthwaite looked cheered.

Suddenly an idea struck him. His jaw fell.

"My goodness," he cried, "I've only just realized it! That rascal, with his poisoned cocktail! Anyone might have drunk it! It might have been me!"

"There is an even more terrible possibility that you have not considered," said Poirot.

"Eh?"

"It might have been me," said Hercule Poirot."

Mademoiselle, I speak as a friend. Bury your dead! ... Give up the past! Turn to the future! What is done is done. Bitterness will not undo it.'

'I'm sure that would suit dear Linnet admirably.'

Poirot made a gesture. 'I am not thinking of her at this moment! I am thinking of you. You have suffered - yes - but what you are doing now will only prolong the suffering.

"The English are very stupid," said Poirot. "They think that they can deceive anyone but that no one can deceive them."